From patchwork Mon Dec 6 22:39:41 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Thomas Gleixner X-Patchwork-Id: 12695048 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 874F8C433F5 for ; Mon, 6 Dec 2021 23:02:21 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:Date:MIME-Version:References:Subject:Cc :To:From:Message-ID:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To: List-Owner; bh=sEQMMi23+UERI5SSps2toB6IaG1rtxq5i/jvt0ttVCU=; b=sXZU2rLxsfSJkZ u4ZFTlsJUoEcXf/4wJnJgN1RMlSkSFGBEdwLufPVY4gMqwOd4KXR0udoXNYQDXnppc/CuWVep2n6t +CHzn404xYUkI/TTSEuLasQ/jtg/2A0cj4G6Xs24jMHKN4jwf/jQFcdxhGHFy1PMOuoGUdYch/h7p gNDBs+Bx15NT3fRhXhhfq852F12kQXiFFaikQD93ODH3EL1qlK9d6YdAU7p+oYP/BcrlgOtREXHEw 0enjNudsApZXHa0mjI+yrfGyRTn7E1H3R5jYBknC295/EYm/GdPq7l/DMBwpJEry+T0jrjOB5GwWE TzD2znpNLecu5oAzXzXQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1muMyB-006PT5-SI; Mon, 06 Dec 2021 23:00:28 +0000 Received: from galois.linutronix.de ([2a0a:51c0:0:12e:550::1]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1muMe7-006FkP-4e for linux-arm-kernel@lists.infradead.org; Mon, 06 Dec 2021 22:39:45 +0000 Message-ID: <20211206210439.181331216@linutronix.de> DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020; t=1638830381; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: references:references; bh=VrULNCMH+O8xsmxJgHu1VunM7q/HyFmEpUljbWBlO+M=; b=1WyUya3l8fZi6fy1zbrOKQrTo97M/mFRNLJk70qGOPb0JPRgzFKQUP3Ap98oq2yIU+W79y WmvByYmwToUfcQdjSAd5N46svh0Lkih1RSbg6furNRI0+XUMr1pOBKIX+irSBkIRN609j/ jgDcnPD7jjQZ/ZAEDMijZa34I3oXKq99mGxdyY7uvZ2xHboD3lTKRVNV1ahRc0v6NJpUyd 2djS86MgaRG75KvoijVeoRbChYP6OBHa4h+jnI5iBX5I8xLG5cijyFLO/hLr8BePuB5G8D EXG5Csvz4BostgHD1hbblseyHYWXy7KyZk0QJOjUNO2iPqUZZX60PIldxOiaQQ== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1638830381; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: references:references; bh=VrULNCMH+O8xsmxJgHu1VunM7q/HyFmEpUljbWBlO+M=; b=4SHbAktYMF4p3JfEkG2RuP8fQBgK7GPTe1sN6CDnwn2pN1kMTUy4TffqwybjaftPt18Fji W4koD0rufC6aGiCQ== From: Thomas Gleixner To: LKML Cc: Bjorn Helgaas , Marc Zygnier , Alex Williamson , Kevin Tian , Jason Gunthorpe , Megha Dey , Ashok Raj , linux-pci@vger.kernel.org, Cedric Le Goater , xen-devel@lists.xenproject.org, Juergen Gross , Greg Kroah-Hartman , Will Deacon , Santosh Shilimkar , iommu@lists.linux-foundation.org, dmaengine@vger.kernel.org, Stuart Yoder , Laurentiu Tudor , Nishanth Menon , Tero Kristo , linux-arm-kernel@lists.infradead.org, Vinod Koul , Mark Rutland , Robin Murphy , Sinan Kaya Subject: [patch V2 28/36] PCI/MSI: Use __msi_get_virq() in pci_get_vector() References: <20211206210307.625116253@linutronix.de> MIME-Version: 1.0 Date: Mon, 6 Dec 2021 23:39:41 +0100 (CET) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20211206_143943_372583_3BC7DD43 X-CRM114-Status: GOOD ( 10.44 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Use msi_get_vector() and handle the return value to be compatible. No functional change intended. Signed-off-by: Thomas Gleixner Reviewed-by: Greg Kroah-Hartman Acked-by: Bjorn Helgaas --- V2: Handle the INTx case directly instead of trying to be overly smart - Marc --- drivers/pci/msi/msi.c | 25 +++++-------------------- 1 file changed, 5 insertions(+), 20 deletions(-) --- a/drivers/pci/msi/msi.c +++ b/drivers/pci/msi/msi.c @@ -1032,28 +1032,13 @@ EXPORT_SYMBOL(pci_free_irq_vectors); */ int pci_irq_vector(struct pci_dev *dev, unsigned int nr) { - if (dev->msix_enabled) { - struct msi_desc *entry; + unsigned int irq; - for_each_pci_msi_entry(entry, dev) { - if (entry->msi_index == nr) - return entry->irq; - } - WARN_ON_ONCE(1); - return -EINVAL; - } + if (!dev->msi_enabled && !dev->msix_enabled) + return !nr ? dev->irq : -EINVAL; - if (dev->msi_enabled) { - struct msi_desc *entry = first_pci_msi_entry(dev); - - if (WARN_ON_ONCE(nr >= entry->nvec_used)) - return -EINVAL; - } else { - if (WARN_ON_ONCE(nr > 0)) - return -EINVAL; - } - - return dev->irq + nr; + irq = msi_get_virq(&dev->dev, nr); + return irq ? irq : -EINVAL; } EXPORT_SYMBOL(pci_irq_vector);